Fertilization Review

What is the process of fertilization?

• Fusion of a sperm cell with an egg cell to form a zygote

• The release of an egg cell from the ovary

• Combining two zygotes to form a single cell

• Division of a zygote into sperm and egg cells

Where does fertilization take place in humans?

• Lungs

• Fallopian tubes

• Stomach

• Liver

What is the role of sperm in fertilization?

• Initiating the development of the embryo

• Protecting the egg from external threats

• Providing nutrients to the egg

• Transporting paternal DNA to the maternal DNA

What is the role of egg in fertilization?

• Provides genetic material and serves as the site for sperm entry

• Provides energy for the developing embryo

• Protects the sperm from the acidic environment of the female reproductive tract

• Triggers the release of hormones necessary for fertilization

Explain the significance of genetic variation in the process of fertilization.

• Genetic variation leads to the creation of identical offspring

• Genetic variation allows for the creation of offspring with unique combinations of traits.

• Genetic variation has no significance in the process of fertilization

• Genetic variation only affects the physical appearance of the offspring

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What is the result of successful fertilization?

• 1 haploid zygote cell

• 2 haploid gamete cells

• 1 diploid gamete cell

• 1 diploid zygote cell

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How does fertilization lead to the formation of a zygote?

• Fertilization leads to the formation of a zygote through the release of hormones

• Fertilization leads to the formation of a zygote through the activation of dormant genes

• Fertilization leads to the formation of a zygote through the process of cell division

• Fertilization leads to the formation of a zygote through the fusion of genetic material from the sperm and egg cells.

Why are gametes (sperm and egg) haploid?

• Gametes only contain half of the DNA code (23 chromosomes) so that after fertilization the zygote has a full set (46 chromosomes) and does not have too much DNA.

• gametes are not haploid they are diploid

• Haploid cells decrease the chance of passing on genetic abnormalities to the offspring.

• Haploid cells weigh less so are able to move faster through the parental reproductive system to quicken fertilization.

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Describe the DNA present in a zygote cell.

• The DNA is a new code generated by the mother and given to the zygote.

• The DNA is half rom the father and half from the mother.

• The DNA for the zygote comes from the father's sperm.

• The zygote has 23 chromosomes that are unique to that cell/organism.

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After the zygote cell is formed during fertilization, what process forms the baby organism?

• Meiosis makes the cells needed for the baby's body.

• Meiosis makes the gametes needed for fertilization.

• Mitosis copies the zygote cell to form the baby's body.

• Mitosis makes new genetically unique cells for each organ in the baby's body.

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